ruby script/plugin install http://svn.toolbocks.com/plugins/manage_fixtures

Create YAML test fixtures from data in an existing database. Defaults to development database. Set RAILS_ENV to override.

  [%] rake db:fixtures:export_all

Create YAML test fixtures for a specific table(s) from data in an existing database. Defaults to development database. Set RAILS_ENV to override.

  [%] rake db:fixtures:export_for_tables TABLES=foos[,bars] 

Create YAML text fixtures based on a specific SQL query

  [%] rake db:fixtures:export_using_query SQL="select * from foo where id='bar'" FIXTURE_NAME=foo

Import the YAML test fixtures for specific models from data in an existing database. Defaults to development database. Set RAILS_ENV to override.

  [%] rake db:fixtures:import_for_models MODELS=Foo[,Bar,Land]

Import all YAML test fixtures for all of the tables from data in an existing database. Defaults to development database. Set RAILS_ENV to override.

  [%] rake db:fixtures:import_all

Import all YAML test fixtures for all of the tables from data in an existing database. Defaults to development database. Set RAILS_ENV to override.

  [%] rake db:fixtures:import_for_tables TABLES=foos[,bars,land]

There is currently no advanced documentation for this plugin.